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# This file is part of daf_butler. 

# 

# Developed for the LSST Data Management System. 

# This product includes software developed by the LSST Project 

# (http://www.lsst.org). 

# See the COPYRIGHT file at the top-level directory of this distribution 

# for details of code ownership. 

# 

# This program is free software: you can redistribute it and/or modify 

# it under the terms of the GNU General Public License as published by 

# the Free Software Foundation, either version 3 of the License, or 

# (at your option) any later version. 

# 

# This program is distributed in the hope that it will be useful, 

# but WITHOUT ANY WARRANTY; without even the implied warranty of 

# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 

# GNU General Public License for more details. 

# 

# You should have received a copy of the GNU General Public License 

# along with this program. If not, see <http://www.gnu.org/licenses/>. 

 

"""Support for writing matplotlib figures.""" 

 

__all__ = ("MatplotlibFormatter",) 

 

from lsst.daf.butler.formatters.fileFormatter import FileFormatter 

 

 

class MatplotlibFormatter(FileFormatter): 

"""Interface for writing matplotlib figures. 

""" 

 

extension = ".png" 

"""Matplotlib figures are always written in PNG format.""" 

 

def _readFile(self, path, pytype=None): 

# docstring inherited from FileFormatter._readFile 

raise NotImplementedError( 

f"matplotlib figures cannot be read by the butler; path is {path}") 

 

def _writeFile(self, inMemoryDataset): 

# docstring inherited from FileFormatter._writeFile 

inMemoryDataset.savefig(self.fileDescriptor.location.path)